Article
Chemistry, Multidisciplinary
Zafer Mutlu, Juan Pablo Llinas, Peter H. Jacobse, Ilya Piskun, Raymond Blackwell, Michael F. Crommie, Felix R. Fischer, Jeffrey Bokor
Summary: The rational bottom-up synthesis of graphene nanoribbons (GNRs) provides precise control of widths and edges for a wide range of electronic properties, showing promise for electronic devices. A method for transfer-free placement of GNRs on insulators has been demonstrated, allowing for high-density and structurally-intact GNR growth on gold films deposited on SiO2/Si substrates. The scalability of this method to 12-inch wafers represents an important advancement towards large-scale integration of GNRs into electronic devices.
Article
Chemistry, Multidisciplinary
Wenhao Huang, Oliver Braun, David I. Indolese, Gabriela Borin Barin, Guido Gandus, Michael Stiefel, Antonis Olziersky, Klaus Mu''llen, Mathieu Luisier, Daniele Passerone, Pascal Ruffieux, Christian Scho''nenberger, Kenji Watanabe, Takashi Taniguchi, Roman Fasel, Jian Zhang, Michel Calame, Mickael L. Perrin
Summary: Bottom-up-synthesized graphene nanoribbons (GNRs) are a type of designer quantum materials with superior properties and have potential applications in various fields. However, making electrical contact with GNRs is still a major challenge due to their small size.
Review
Chemistry, Multidisciplinary
R. S. Koen Houtsma, Joris de la Rie, Meike Stohr
Summary: Graphene nanoribbons show great potential for future applications in nanoelectronic devices by combining excellent electronic properties with tunability through precise control over width and edge structure. Research has led to a variety of graphene nanoribbons with different properties, highlighting the importance of precursor design in determining final electronic structure. The ability to fine-tune properties through precursor design has generated significant research interest and potential for future applications, as demonstrated by selected device prototypes.
CHEMICAL SOCIETY REVIEWS
(2021)
Article
Multidisciplinary Sciences
S. E. Ammerman, V Jelic, Y. Wei, V. N. Breslin, M. Hassan, N. Everett, S. Lee, Q. Sun, C. A. Pignedoli, P. Ruffieux, R. Fasel, T. L. Cocker
Summary: The authors utilized lightwave-driven scanning tunnelling microscopy to investigate localized wavefunctions of graphene nanoribbons with atomic resolution, revealing their highly localized nature. This technique shows great promise for the design and measurement of atomic precision electronic devices.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Aristides D. Zdetsis
Summary: This article presents a concise explanation for the energy gaps of atomically precise armchair graphene nanoribbons (AGNRs) using DFT calculations and symmetry principles. The results are in good agreement with experiments. The article suggests that the measured energy gaps are independent of the substrate and that the lowest energy state is a closed singlet with no conventional magnetism.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Remy Pawlak, Ernst Meyer, Khalid N. Anindya, Toshiki Shimizu, Jung-Ching Liu, Takumi Sakamaki, Rui Shang, Alain Rochefort, Eiichi Nakamura
Summary: The substitution of heteroatoms and non-benzenoid carbons in nanographene structure allows for atomic engineering of electronic properties. This study demonstrates the bottom-up synthesis of graphene nanoribbons with embedded BN-doped rubicene components using on-surface chemistry. The incorporation of BN heteroatoms results in an increased electronic band gap, providing opportunities for designing semiconducting graphene nanoribbons with optoelectronic properties.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Pei Zeng, Mengjie Zheng, Hao Chen, Guanying Chen, Zhiwen Shu, Lei Chen, Huikang Liang, Yuting Zhou, Qian Zhao, Huigao Duan
Summary: Seeking sensitive, large-scale, and low-cost substrates is crucial for practical applications of SERS technology. Noble metallic plasmonic nanostructures with dense hot spots have received significant attention due to their potential for sensitive and stable SERS performance. This work presents a simple fabrication method to achieve wafer-scale ultradense tilted and staggered plasmonic metallic nanopillars filled with numerous nanogaps. The resulting SERS substrate exhibits excellent detection limit, reproducibility, and long-term stability, making it promising for low-cost and high-performance sensors.
Article
Chemistry, Multidisciplinary
Xiangsha Du, Zhongyu Liu, Tatsuya Higaki, Meng Zhou, Rongchao Jin
Summary: In this work, the plasmon characteristics of thiolate-protected Au-279(SR)(84) and Au-333(SR)(79) nanoclusters were investigated. It was found that both nanoclusters exhibited distinct plasmon resonances at room temperature. However, the transition from the metallic state to the insulating state at cryogenic temperatures did not affect the plasmon behavior, suggesting a nonthermal origin for the electron-gas formation.
Article
Chemistry, Multidisciplinary
Ruoting Yin, Zhengya Wang, Shijing Tan, Chuanxu Ma, Bing Wang
Summary: Graphene nanoribbons (GNRs) have highly tunable structure-dependent properties and hold great promise for future nanodevices and quantum information processing. However, there are still obstacles and challenges, such as the screening effect of transition metal substrates and the lack of collective tip-based techniques to probe the properties of GNRs accurately.
Article
Chemistry, Multidisciplinary
Pin-Chiao Huang, Hongye Sun, Mamun Sarker, Christopher M. Caroff, Gregory S. Girolami, Alexander Sinitskii, Joseph W. Lyding
Summary: This paper demonstrates the fabrication of nanometer-scale metal contacts on individual graphene nanoribbons (GNRs) and the use of these contacts to control the electronic character of the GNRs. Using a low-voltage direct-write STM-based process, sub-5 nm metallic hafnium diboride (HfB2) contacts are patterned directly on top of single GNRs in an ultrahigh-vacuum scanning tunneling microscope (UHV-STM), with all the fabrication performed on a technologically relevant semiconductor silicon substrate. Scanning tunneling spectroscopy (STS) data verify the expected metallic and semiconducting character of the contacts and GNR, and also show induced band bending and p-n junction formation in the GNR due to the metal-GNR work function difference. Contact engineering with different work function metals eliminates the need for complex chemical doping to create GNRs with different characteristics. This paper demonstrates the successful fabrication of precise metal contacts and local p-n junction formation on single GNRs.
Article
Multidisciplinary Sciences
Xufan Li, Baichang Li, Jincheng Lei, Ksenia Bets, Xiahan Sang, Emmanuel Okogbue, Yang Liu, Raymond R. Unocic, Boris Yakobson, James Hone, Avetik R. Harutyunyan
Summary: Transition metal dichalcogenides exhibit different electronic behaviors based on layers and width. Nickel nanoparticles play a role in promoting the formation of multilayer structures and controlling the width of nanoribbons. Simulations confirm the VLS growth mechanism's higher speed and the Coulomb blockade oscillation characteristics of nanoribbons at 60K.
Article
Nanoscience & Nanotechnology
Damian Bouwmeester, Talieh S. S. Ghiasi, Gabriela Borin Barin, Klaus Muellen, Pascal Ruffieux, Roman Fasel, Herre S. J. van der Zant
Summary: In this paper, we successfully establish low-resistance electrical contact with nine-atom-wide armchair graphene nanoribbons (GNRs) using superconducting alloy MoRe and Pd (as a reference). To preserve the nanoscale geometry of the contacts, we develop a PMMA-assisted technique to transfer the GNRs onto the pre-patterned electrodes. Our device characterizations show thermally activated gate-tunable conductance in GNR-MoRe-based transistors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Physical
Ling Chen, Yonglei Du, Ying Lv, Daoqing Fan, Junfei Wu, Lingbao Wu, Mengting Cui, Haizhu Yu, Manzhou Zhu
Summary: The redox property of small alloy AuAg nanoclusters has been investigated and found to mediate both the decomposition of H2O2 and the reduction of NADH. The hydrogen bonding between the carboxylic groups on the surface of the nanoclusters and the amino N-H bonds on NAD is identified as the driving force for the reduction reaction. This discovery opens up new possibilities for the biological applications of metal nanoclusters.
Article
Nanoscience & Nanotechnology
Jian Zhang, Oliver Braun, Gabriela Borin Barin, Sara Sangtarash, Jan Overbeck, Rimah Darawish, Michael Stiefel, Roman Furrer, Antonis Olziersky, Klaus Muellen, Ivan Shorubalko, Abdalghani H. S. Daaoub, Pascal Ruffieux, Roman Fasel, Hatef Sadeghi, Mickael L. Perrin, Michel Calame
Summary: This article reports the integration of 9-atom wide armchair graphene nanoribbons (9-AGNRs) into a multi-gate field-effect transistor (FET) structure. High-resolution electron-beam lithography is used to define 12 nm wide finger gates, which are combined with graphene electrodes for contacting the GNRs. Low-temperature transport spectroscopy measurements reveal the formation of quantum dots (QDs) with rich Coulomb diamond patterns, indicating that the QDs are connected both in series and in parallel. Additionally, the additional gates enable differential tuning of the QDs in the nanojunction, providing the first step toward multi-gate control of GNR-based multi-dot systems.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Multidisciplinary Sciences
Li-Juan Liu, Fahri Alkan, Shengli Zhuang, Dongyi Liu, Tehseen Nawaz, Jun Guo, Xiaozhou Luo, Jian He
Summary: This study reports a new type of gold nanoclusters, whose intrinsic chirality arises solely from the arrangement of the organic components on their surface. The highly dynamic behaviors of aromatic rings in the thiolates assembled via pi - pi stacking and C - H center dot center dot center dot pi interactions explain the non-asymmetrically induced inner structures of these nanoclusters. This work introduces an important class of nanoclusters with intrinsic chirality from surface layers and helps elucidate the transition of gold nanoclusters from their molecular to metallic states.
NATURE COMMUNICATIONS
(2023)
Review
Materials Science, Multidisciplinary
Archit Dhingra, Dmitri E. Nikonov, Alexey Lipatov, Alexander Sinitskii, Peter A. Dowben
Summary: Transition metal trichalcogenides (TMTs) are 2D materials with potential applications in low-dimensional optical and electronic devices. However, the performance of 2D devices based on TMTs has been limited by contact-related issues. In this review, the interfacial interactions between gold and various TMTs were investigated to find solutions to these problems.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Bo Zhang, Shuo Sun, Yinglu Jia, Jun Dai, Dhanusha T. N. Rathnayake, Xi Huang, Jade Casasent, Gopi Adhikari, Temban Acha Billy, Yongfeng Lu, Xiao Cheng Zeng, Yinsheng Guo
Summary: This study directly visualizes ferroelastic twin domains in lead halide perovskites and demonstrates their role as internal reflectors for energy transport. The findings show that these domain walls have low energies and can easily switch between different orientations, making them suitable for optical guiding of internal photoexcitations.
ADVANCED MATERIALS
(2023)
Article
Physics, Condensed Matter
Simeon J. Gilbert, Mingxing Li, Jia-Shiang Chen, Hemian Yi, Alexey Lipatov, Jose Avila, Alexander Sinitskii, Maria C. Asensio, Peter A. Dowben, Andrew J. Yost
Summary: The presence of in-plane chiral effects and spin-orbit coupling in a TiS3(001) field-effect phototransistor is confirmed through changes in the photocurrent caused by left versus right circularly polarized light. NanoARPES measurements indicate that the direction of the photocurrent is protected by strong spin-orbit coupling and the anisotropy of the band structure. Dark electronic transport measurements show that TiS3 is n-type with an electron mobility ranging from 1-6 cm(2)V(-1)s(-1). I-V measurements under laser illumination demonstrate that the photocurrent exhibits bias directionality dependence similar to bipolar spin diode behavior. The presence of spin-orbit coupling in TiS3, a material without heavy elements, is attributed to the loss of inversion symmetry at the TiS3(001) surface.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Saman Bagheri, Jehad Abourahma, Haidong Lu, Nataliia S. Vorobeva, Shengyuan Luo, Alexei Gruverman, Alexander Sinitskii
Summary: This paper demonstrates a high-yield fabrication of electromechanical devices based on individual suspended monolayer MXene flakes. The devices show stable electromechanical responses and high electrical conductivity.
Article
Chemistry, Multidisciplinary
Biwu Chu, Yuan Liu, Hao Li, Yongcheng Jia, Jun Liu, Qing Cao, Tianzeng Chen, Peng Zhang, Qingxin Ma, Xiao Cheng Zeng, Joseph S. Francisco, Hong He
Summary: Using a flow tube reactor, it was discovered that N2O5 can be released from the TiO2 surface during the photocatalytic oxidation of NO2, which provides a previously unreported source of N2O5. The release rate of N2O5 from TiO2 depends on various factors including the initial NO2 concentration, relative humidity, O-2/N-2 ratio, and irradiation intensity. Experimental and theoretical studies show that this release is due to the reaction of NO2 with surface hydroxyl groups and electron holes on TiO2, followed by its combination with another NO2 molecule to form N2O5.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Rui Zhang, Wenshan Liu, Feng-Ming Zhang, Zhao-Di Yang, Guiling Zhang, Xiao Cheng Zeng
Summary: COF-C4N was found to be an effective oxygen evolution reaction (OER) electrocatalyst with low overpotential, and it has ideal N-edge cavities suitable for anchoring transition metal (TM) sites, thereby achieving higher OER activity as single atom catalysts (SACs). Two descriptors for characterizing the OER activities were proposed based on density-functional theory calculations, and Co-COF-C4N and Ni-COF-C4N were theoretically suggested to be highly active and low-cost OER SACs for target synthesis.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Jiaqi Lin, Jiaxin Jiang, Jiaqi Zhang, Hongyan Guo, Xiao Cheng Zeng, Zhiwen Zhuo, Ning Lu
Summary: A new diamond-like boron carbonitride material (BC6N) with excellent mechanical, electronic, and optical properties has been discovered. It can be synthesized easily and has potential applications as a superhard and high-temperature material, as well as in the semiconductor and optical devices fields.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Zhongjun Li, Yahui Zheng, Guojun Li, Hanxi Wang, Weiduo Zhu, Haidi Wang, Zhao Chen, Yupeng Yuan, Xiao Cheng Zeng, Yucheng Wu
Summary: The deviation of the Schottky barrier (SB) in the ultraclean van der Waals contact between 2D MoS2 and 3D In from the Schottky-Mott limit (SML) is investigated. The deviation is found to be attributed to the combined effects of interface potential difference (?V) and Fermi-level shift (?E-F). By coating a thin film of Au, Sc, or Ti on the back side of In, the deviation and the sum of ?V and ?E-F can be reduced. Particularly, the SB is significantly reduced to 0.12 eV in the Ti coating case. This interface engineering can be applied to regulate the SB between a 2D semiconductor and a 3D alloy.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Instruments & Instrumentation
Yibo Wang, Sajib Kumar Saha, Tianlin Li, Yanwei Xiong, Kyle Wilkin, Anil Adhikari, Michael Loes, Jehad Abourahma, Xia Hong, Shireen Adenwalla, Alexander Sinitskii, Martin Centurion
Summary: We modified a gas phase ultrafast electron diffraction (UED) instrument to conduct experiments on both gas and condensed matter targets. The modified instrument demonstrated sub-picosecond time-resolved experiments with solid state samples. By using a hybrid DC-RF acceleration structure, femtosecond electron pulses are delivered to the target synchronized with femtosecond laser pulses. The new system allows for transmission UED on thin solid samples, as well as cooling samples to cryogenic temperatures and carrying out time-resolved measurements. The cooling capability was tested on 1T-TaS2 for diffraction patterns of temperature dependent charge density waves, and the time-resolved capability was verified by capturing dynamics in photoexcited single-crystal gold.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Nanoscience & Nanotechnology
Michael J. Loes, Saman Bagheri, Nataliia S. Vorobeva, Jehad Abourahma, Alexander Sinitskii
Summary: This study proposes a highly tunable gas sensor strategy by combining MXene with a sacrificial material that can be controlled oxidized to form oxide nanoparticles, altering sensing response. The controlled annealing process retains the integrity of MXene sheets while converting the sacrificial material to a metal oxide, fine-tuning the sensor properties. The approach is demonstrated using Ti3C2Tx MXene mixed with TiS3, showing improved sensor response to ethanol. The addition of TiS3 allows for the preservation of MXene as the sensor material and the tuning of sensor properties through annealing for specific analytes or applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Michael J. Loes, Alexey Lipatov, Nataliia S. Vorobeva, Haidong Lu, Jehad Abourahma, Dmitry S. Muratov, Alexei Gruverman, Alexander Sinitskii
Summary: In this study, the decoration of two-dimensional (2D) materials with MAPbI3 nanoparticles is shown to enhance their visible light photoresponse. The approach was demonstrated using 2D SnS2, which has limited absorption in the visible range. Field-effect transistors based on the decorated SnS2 showed increased photoresponse throughout the visible spectrum. The decorated devices exhibited stable and reproducible photoswitching behavior.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Pin-Chiao Huang, Hongye Sun, Mamun Sarker, Christopher M. Caroff, Gregory S. Girolami, Alexander Sinitskii, Joseph W. Lyding
Summary: This paper demonstrates the fabrication of nanometer-scale metal contacts on individual graphene nanoribbons (GNRs) and the use of these contacts to control the electronic character of the GNRs. Using a low-voltage direct-write STM-based process, sub-5 nm metallic hafnium diboride (HfB2) contacts are patterned directly on top of single GNRs in an ultrahigh-vacuum scanning tunneling microscope (UHV-STM), with all the fabrication performed on a technologically relevant semiconductor silicon substrate. Scanning tunneling spectroscopy (STS) data verify the expected metallic and semiconducting character of the contacts and GNR, and also show induced band bending and p-n junction formation in the GNR due to the metal-GNR work function difference. Contact engineering with different work function metals eliminates the need for complex chemical doping to create GNRs with different characteristics. This paper demonstrates the successful fabrication of precise metal contacts and local p-n junction formation on single GNRs.
Article
Multidisciplinary Sciences
Bo Lin, Jian Jiang, Xiao Cheng Zeng, Lei Li
Summary: Understanding the phase behavior of nanoconfined water films is important in various fields. This study developed a machine-learning force field to determine the phase diagram of monolayer water/ice in nanoconfinement. Two new high-density ices were discovered, with unique hydrogen-bonding networks. The study also identified the stable region for the lowest-density monolayer ice at negative pressures.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Haidong Lu, Hugo Aramberri, Alexey Lipatov, Roger Proksch, Alexander Sinitskii, Jorge Iniguez, Alexei Gruverman
Summary: This study investigates the longitudinal piezoelectric coefficient in 2D ferroelectric 1T ''-MoS2 and finds that it exhibits negative piezoelectricity. The experimental results are supported by theoretical calculations.
ACS MATERIALS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Akari Seko, Shun Sakaida, Masashi Koyanagi, Yasuaki Okada, Takeshi Torita, Mark Anayee, Mikhail Shekhirev, Yury Gogotsi
Summary: MXenes are two-dimensional nanomaterials with various properties and potential applications in electronics, photonics, energy storage, etc. Their hydrophilicity allows them to absorb water from the environment, resulting in swelling and degradation of the assembled films. In this study, we demonstrate that intercalation of N-methylformamide (NMF) improves the stability of MXene films at high temperatures and humidity through host-guest hydrogen bonding. NMF interacts strongly with the MXene surface and occupies the interlayer spacing, reducing water intercalation and maintaining high electrical conductivity in hot and humid conditions.
MRS COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
